Update stubgen.py

Author: BobTheBuidler

mypy/stubgen.py

@@ -1021,13 +1021,13 @@ def is_typed_namedtuple(self, expr: CallExpr) -> bool:
     def _get_namedtuple_fields(self, call: CallExpr) -> list[tuple[str, str]] | None:
         if self.is_namedtuple(call):
             fields_arg = call.args[1]
-            folded = constant_fold_expr(fields_arg, "unused")
+            folded = constant_fold_expr(fields_arg, "<unused>")
             if isinstance(folded, str):
                 field_names = folded.replace(",", " ").split()
             elif isinstance(fields_arg, (ListExpr, TupleExpr)):
                 field_names = []
                 for field in fields_arg.items:
-                    folded = constant_fold_expr(fields_arg, "unused")
+                    folded = constant_fold_expr(fields_arg, "<unused>")
                     if not isinstance(folded, str):
                         return None
                     field_names.append(folded)